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2d943adf86
While trying to support CHECKSUM_COMPLETE for IPV6 fragments, I had to experiments various hacks in get_fixed_ipv6_csum(). I must admit I could not find how to implement this :/ However, get_fixed_ipv6_csum() does a lot of redundant operations, calling csum_partial() twice. First csum_partial() computes the checksum of saddr and daddr, put in @csum_pseudo_hdr. Undone later in the second csum_partial() computed on whole ipv6 header. Then nexthdr is added once, added a second time, then substracted. payload_len is added once, then substracted. Really all this can be reduced to two add_csum(), to add back 6 bytes that were removed by mlx4 when providing hw_checksum in RX descriptor. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.